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-rw-r--r--botan/src/alloc/alloc_mmap/mmap_mem.cpp124
1 files changed, 0 insertions, 124 deletions
diff --git a/botan/src/alloc/alloc_mmap/mmap_mem.cpp b/botan/src/alloc/alloc_mmap/mmap_mem.cpp
deleted file mode 100644
index 546da7a..0000000
--- a/botan/src/alloc/alloc_mmap/mmap_mem.cpp
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
-* Memory Mapping Allocator
-* (C) 1999-2007 Jack Lloyd
-*
-* Distributed under the terms of the Botan license
-*/
-
-#include <botan/mmap_mem.h>
-#include <cstring>
-
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <fcntl.h>
-
-#ifndef MAP_FAILED
- #define MAP_FAILED -1
-#endif
-
-namespace Botan {
-
-namespace {
-
-/*
-* MemoryMapping_Allocator Exception
-*/
-class MemoryMapping_Failed : public Exception
- {
- public:
- MemoryMapping_Failed(const std::string& msg) :
- Exception("MemoryMapping_Allocator: " + msg) {}
- };
-
-}
-
-/*
-* Memory Map a File into Memory
-*/
-void* MemoryMapping_Allocator::alloc_block(u32bit n)
- {
- class TemporaryFile
- {
- public:
- int get_fd() const { return fd; }
- const std::string path() const { return filepath; }
-
- TemporaryFile(const std::string& base)
- {
- const std::string path = base + "XXXXXX";
-
- filepath = new char[path.length() + 1];
- std::strcpy(filepath, path.c_str());
-
- mode_t old_umask = ::umask(077);
- fd = ::mkstemp(filepath);
- ::umask(old_umask);
- }
-
- ~TemporaryFile()
- {
- delete[] filepath;
- if(fd != -1 && ::close(fd) == -1)
- throw MemoryMapping_Failed("Could not close file");
- }
- private:
- int fd;
- char* filepath;
- };
-
- TemporaryFile file("/tmp/botan_");
-
- if(file.get_fd() == -1)
- throw MemoryMapping_Failed("Could not create file");
-
- if(::unlink(file.path().c_str()))
- throw MemoryMapping_Failed("Could not unlink file '" + file.path() + "'");
-
- if(::lseek(file.get_fd(), n-1, SEEK_SET) < 0)
- throw MemoryMapping_Failed("Could not seek file");
-
- if(::write(file.get_fd(), "\0", 1) != 1)
- throw MemoryMapping_Failed("Could not write to file");
-
-#ifndef MAP_NOSYNC
- #define MAP_NOSYNC 0
-#endif
-
- void* ptr = ::mmap(0, n,
- PROT_READ | PROT_WRITE,
- MAP_SHARED | MAP_NOSYNC,
- file.get_fd(), 0);
-
- if(ptr == static_cast<void*>(MAP_FAILED))
- throw MemoryMapping_Failed("Could not map file");
-
- return ptr;
- }
-
-/*
-* Remove a Memory Mapping
-*/
-void MemoryMapping_Allocator::dealloc_block(void* ptr, u32bit n)
- {
- if(ptr == 0)
- return;
-
- const byte PATTERNS[] = { 0x00, 0xFF, 0xAA, 0x55, 0x73, 0x8C, 0x5F, 0xA0,
- 0x6E, 0x91, 0x30, 0xCF, 0xD3, 0x2C, 0xAC, 0x00 };
-
- for(u32bit j = 0; j != sizeof(PATTERNS); j++)
- {
- std::memset(ptr, PATTERNS[j], n);
-
- if(::msync(ptr, n, MS_SYNC))
- throw MemoryMapping_Failed("Sync operation failed");
- }
-
- if(::munmap(ptr, n))
- throw MemoryMapping_Failed("Could not unmap file");
- }
-
-}